Mathematics, 19.07.2019 17:00 manou76
Suppose that a certain college class contains 35 students. of these, 17 are juniors, 20 are social science majors, and 12 are neither. a student is selected at random from the class. (a) what is the probability that the student is both a junior and a social science major? (b) given that the student selected is a junior, what is the probability that she is also a social science major?
Answers: 1
is the set of juniors and 
is the set of social science majors. There are 35 students in all, but 12 of them don't belong to either set, so 
. Then
. By definition, this would be
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Suppose that a certain college class contains 35 students. of these, 17 are juniors, 20 are social s...
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